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Influence of leaf, humidity and applied lubrication on friction in the wheel-rail contact: pin-on-disc experiments
KTH, Superseded Departments, Machine Design.ORCID iD: 0000-0003-2489-0688
KTH, Superseded Departments, Machine Design.
2004 (English)In: Proceedings of the Institution of mechanical engineers. Part F, journal of rail and rapid transit, ISSN 0954-4097, E-ISSN 2041-3017, Vol. 218, no 3, 235-242 p.Article in journal (Refereed) Published
Abstract [en]

A novel test method has been used to study how applied and natural lubrication (leaf and humidity) influences the coefficient of friction in the wheel-rail contact. A pin-on-disc tribometer placed in a climate chamber was used as the test equipment. The pin-on-disc contact simulates the wheel-rail contact caused by commuter train traffic on straight track. The results show that the coefficient of friction decreases when the relative humidity increases and decreases even more when a leaf is used as a lubricant. By using an elm leaf as the lubricant, the coefficient of friction is reduced by a factor of four compared with the unlubricated case. However, the coefficient of friction decreases even more when a rail lubricant is used.

Place, publisher, year, edition, pages
2004. Vol. 218, no 3, 235-242 p.
Keyword [en]
leaf, coefficient of friction, wheel-rail contact, relative humidity, lubricant, pin-on-disc contact, adhesion
National Category
Vehicle Engineering
Identifiers
URN: urn:nbn:se:kth:diva-23908DOI: 10.1243/0954409042389364ISI: 000225345400005Scopus ID: 2-s2.0-9144224435OAI: oai:DiVA.org:kth-23908DiVA: diva2:342607
Note
QC 20100525 QC 20110923Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Olofsson, Ulf

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